The Animated Matte Generator effect is a very advanced tool in Harmony's suite of effects with three key features:
The Animated Matte Generator takes a vector drawing as input and generates animatable points for its contours. This allows you to animate the points and contours of a vector drawing, which can come in handy if you want to animate simple parts of a character rig, like fingers, eyebrows and eyelids.
The Animated Matte Generator can use the vector drawing it is connected to as the basis for an effect matte, from which you can create an outer contour and an inner contour, and use them to generate a custom-shaped feathered effect. The matte's contours can be animated. The resulting effect can be used as-is, or serve as a transparency mask for other effects or drawings.
You can set some of the points and contours of an Animate Matte Generator to snap to the contours of a drawing in your scene. This can be especially useful if you want to create shadows or highlights that match the shape of a drawing.